Answer please? Notebook check today
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Answer please?
Notebook check today
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Math is brought to you by the number …
•May 3, 2013•Day 76 of 90•90-76 =
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Warm-up
1 1
50
exp : 4 3: 1, 4
197
n
n n
licit a nrecursive a a aa
Write an explicit and recursive rule for the nth term. Find a50.
1, 5, 9, 13, …
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Coordinate AlgebraEOCT REVIEW
UNIT 3 – Linear & Exponential Functions
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Question 1 Function vs. Relation
Is this a function?(-1, 2), (8, -4), (12, 3), (12, -3)
No, 12 has two outputs.
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Question 2 Function vs. Relation
Is this a function?
Yes, each input has one output..
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Question 3 Evaluate Functions
136
Evaluate f(x) = 5(3x) + 1 for x = 3.
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Question 4 Combining Functions
2 2If 6 3 5 and 4 5 8,find .f x x x g x x x
g f x
22 8 13x x
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Question 5 Exponential, Linear, or Neither
Each term in a sequence is exactly ½ of the previous term.
Exponential.
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This function is decreasing at a constant rate.
Question 6 Exponential, Linear, or Neither
Linear
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-5 -4 -3 -2 -1 1 2 3 4 5
-5
-4
-3
-2
-1
1
2
3
4
5
Question 7
y decreases
What is happening to y as x increases for the graph?
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Question 8
2ROC
Find the rate of change: f x =-2x+4 1 2when x =2 and x =-3
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Question 9
1 1
50
exp : 4 3: 1, 4
197
n
n n
licit a nrecursive a a aa
Write an explicit and recursive rule for the nth term. Find a50.
1, 5, 9, 13, …
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Question 10
1
1 1
8
exp : 8(2): 8, 2
1024
nn
n n
licit arecursive a a aa
Write an explicit and recursive rule for the nth term. Find a8.
8, 16, 32, 64,…
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Describe the domain:Question 11
( , )-5 -4 -3 -2 -1 1 2 3 4 5
-5
-4
-3
-2
-1
1
2
3
4
5
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What is the asymptote for the function?
Question 12
2y -5 -4 -3 -2 -1 1 2 3 4 5
-5
-4
-3
-2
-1
1
2
3
4
5
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Compare the y-intercepts of the following two functions.
Question 13
( )int (0,1)
( )int (0,5)
g x hasa smallery ercept atand f x hasa greatery ercept at
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Is this function discrete or continuous?
Question 14
discrete
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Given the graph, which of the following are true?
Question 15
A. I and IIB. I and IIIC. I and IVD. I, II, and IV
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If the graph of f(x) is,
What does –f(x) look like?
Question 16
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Ely decides to join a gym. Buff Bodies charges $50 sign-up fee plus $30 a month. Mega Muscles charges $10 sign-up fee plus $40 a month.
Write a function for the cost of each gym membership.
Question 17
( ) 30 50( ) 40 10
Bx xM x x
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Ely decides to join a gym. Buff Bodies charges $50 sign-up fee plus $30 a month. Mega Muscles charges $10 sign-up fee plus $40 a month. Will these two functions ever intersect? If so, where? What does this mean?
Question 18
(4,170)4 ,
arg .After months they willch e the same amount
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For Christmas you get an iPhone 5 worth $800. Every month the value decreases by 5% with all the new products coming out.
Write an exponential equation describing the situation.
How much is the phone worth in 3 years?
Question 19
800(1 .05)$685.90
xy
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Matt made $3,000 last summer coach tennis camps. He wants to continue this business in the following years. He hopes that his profit will increase 12% each year.
Write an equation to describe this situation.
What is the growth/decay factor?
How much will he make in 4 years?
Question 20
3000(1 .12):1.12
$4720.56
xyGrowth Factor
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Describe the transformations
g(x) = -4x – 12
Question 21
412
reflectionstretch by a factor ofshift down units
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Describe the transformations
g(x) = ¼ (3)x–2 + 5
Question 22
1/ 4shrinkby a factor ofshift right two unitsshift up five units
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A manufacturer keeps track of her monthly costs by using a “cost function” that assigns a total cost for a given number of manufactured items, x. The function is C(x) = 5,000 + 1.3x.
a. Can any value be in the domain for this function?
b. What is the cost of 2,000 manufactured items?
c. If costs must be kept below $10,000 this month, what is the greatest number of items she can manufacture?
Question 23
, ' .
7600
3846
No because you can t have a negative amount ofi tems
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Question 24
24 18 1x x
2 2 2If 2 4 7, 3 5, ( ) 4find 2 3 .f x x x g x x x and h x x
g x f x
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Question 25
4 3 28 16 35x x x
2 2 2If 2 4 7, 3 5, ( ) 4find h .f x x x g x x x and h x x
x f x
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Work
WorksheetUnit 3